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Bulgaria
Chelopech Mine

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 Location:
60 km E from Sofia, Bulgaria
  Address:

Chelopech
Bulgaria
2087
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Copper
  • Silver
  • Pyrite
Mining Method
  • Sub-level open stoping (SLOS)
  • Longhole open stoping
  • Paste backfill
Production Start...
Mine Life2030
Chelopech underground gold-copper mine produces gold and copper contained in a concentrate grading between 20 and 45 grams of gold per metric tonne, 9% and 16% copper and between 3.0% and 5.5% arsenic. The high arsenic content of the copper minerals (enargite and tennantite) in the concentrate requires special arsenic recovery systems during the downstream smelting processes.

Owners

Source: p. 10,17
CompanyInterestOwnership
Dundee Precious Metals Inc. 100 % Indirect
Dundee Precious Metals Chelopech EAD (operator) 100 % Direct
The Company holds a 100% interest in the Chelopech underground gold-copper mine through an indirect wholly owned subsidiary Dundee Precious Metals Chelopech EAD.

Contractors

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Deposit Type

  • Epithermal
  • Breccia pipe / Stockwork
  • Vein / narrow vein

Summary:

The Chelopech deposit is located within the Panagyurishte metallogenic district. It formed during Late Cretaceous magmatic-hydrothermal events, defined by a north-northwest alignment of porphyry copper-gold (Elatsite, Assarel and Medet) and epithermal copper-gold deposits that is oblique to the east-west orientation of the Srednogorie belt. The geology of the Panagyurishte metallogenic district comprises a basement of Precambrian granitoid gneisses intruded by Palaeozoic granites and overlain by Late Cretaceous magmatic and sedimentary sequences. The Chelopech area stratigraphy consists of pre-mineral and post-mineral sequences separated by a Late Turonian erosional surface and controlled by an inherited and intermittently reactivated regional Variscan basement relay structure. The pre-mineral and syn-mineral formations consist of the following units (from oldest to youngest): (i) high and low-grade metamorphic complexes that form the Palaeozoic Basement unit; (ii) the Basal Turonian unit of quartz-rich sandstones and conglomerates deposited in a shallow-marine setting; (iii) the Late Turonian Mixed Unit that consist ofshales, dark grey wake sandstones and weakly-sorted epiclastic poly-mictic debris-flows deposits and hydro-magmatic surge deposits, including exhalative sulphide zones; and (iv) the Turonian Magmatic Chelopech mine Formation, a shallow porphyritic diorite/microdiorite intrusive system with phreatomagmatic breccia pipes. The post-mineral sequence consists of an ........

Mining Methods

  • Sub-level open stoping (SLOS)
  • Longhole open stoping
  • Paste backfill

Summary:

Underground mining production is performed using sublevel long-hole open stoping methods. The various orebodies are developed at nominal 30 m vertical intervals and accessed by major declines in both the Western and Central areas. Stopes are designed to be 20 m wide between the levels. The length of the stope depends on the geotechnical conditions, but can range between 20 m and 60 m. The most recent trend of stope design is to keep a 20–30 m length and 60 m height, where geological and geotechnical conditions are suitable. This allows for improvement in ore handling and dust suppression during ore mucking because of shorter remote loading. Ore is delivered via ore passes, or via trucks, to the ROM bin above the crusher. The crusher feeds up to 400 tph to a system of eight conveyors, to transport the ore to the surface stockpile.

Once mined via an “end-slice” methodology, stopes are backfilled with “paste-fill” produced from the mill tailings to which cement is added and which is gravity fed underground via a system of borehole and pipes to the stopes being filled.

Multiple horizons are designed in each ore body so that multiple stopes can be in production at any one time. Simulations have shown that at least six stopes shall need to be producing ore to maintain ore production of 2.2 Mtpa, with up to 22 stopes being drilled, “mucked” and filled at any one time.

Mine Ventilation
The ventilation system has been in a stable configuration ........

Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityProductUnits2023202220212020201920182017
Gold Metal in concentrate koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required201198
Copper Metal in copper conc. M lbs  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in copper conc. oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Pyrite Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202320222021202020192018
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required2,201,220 t2,203,242 t2,216,753 t
Hourly mining capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required400 t of ore
Hourly processing rate  ......  Subscription required  ......  Subscription required  ......  Subscription required275 t
Annual production capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required400,000 t of pyrite concentrate400,000 t of pyrite concentrate400,000 t of pyrite concentrate
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required2,182,844 t2,211,067 t2,211,557 t
Annual mining capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required2.2 Mt2.2 Mt2.2 Mt
^ Guidance / Forecast.
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Reserves at December 31, 2022:
Mineral Reserves are based on a net smelter return-less-costs cut-off value of $0/t. The total cost applied was $55/t which is a sum of operational costs of approximately $50/t and sustaining capital of $5/t.
Mineral Resources are based on a NSR less costs cut-off value of US$0/t in support of reasonable prospects of eventual economic extraction. The total cost applied was approximately $55/t which is a sum of operational costs of approximately $50/t and sustaining capital of approximately $5/t.

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 18.2 Mbcm Gold 2.64 g/t 1.55 M oz
Proven & Probable 18.2 Mbcm Copper 0.77 g/t 311.5 M lbs
Proven & Probable 18.2 Mbcm Silver 8.2 g/t 4.78 M oz
Measured & Indicated 16.4 Mt Gold 2.47 g/t 1.303 M oz
Measured & Indicated 16.4 Mt Copper 0.78 % 281 M lbs
Measured & Indicated 16.4 Mt Silver 9.29 g/t 4.909 M oz
Inferred 4.4 Mt Gold 1.93 g/t 0.276 M oz
Inferred 4.4 Mt Copper 0.7 % 69 M lbs
Inferred 4.4 Mt Silver 8.57 g/t 1.225 M oz

Commodity Production Costs:

CommodityUnits2023202220212020201920182017
Total cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 539 / oz†   598 / oz†  
Total cash costs Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 0.8 / lb†   0.74 / lb†  
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 342 / oz†   326 / oz†  
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
† Net of By-Product.
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Operating Costs:

Units20222021202020192018201720162015
Total operating costs ($/t milled) USD 50  47.1  38.4  36.3  36.4  34.2  33  37.1  

Financials:

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ......  Subscription required
Growth Capital M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 4.1   3.7  
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 9.3   12.8  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 13.4   16.5  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 213.6   206.3  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 102.3   56.1  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 92.3   50.2  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 116.8   107.9  
Subscription required - Subscription is required

Water Supply
Source: Subscription required

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Heavy Mobile Equipment as of March 31, 2022:
HME TypeModelQuantityStatus
Drill ....................... Subscription required ....................... Subscription required Existing
Drill (long hole) ....................... Subscription required ....................... Subscription required Existing
Grader ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Loader ....................... Subscription required ....................... Subscription required Existing
Loader (FEL) ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Personnel Carrier ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required Proposed
Rockbreaker ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required Proposed
Shotcreter ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Trans Mixer ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Truck (underground) ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required Proposed
Truck (water) ....................... Subscription required Existing
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 31, 2022
....................... Subscription required ....................... Subscription required Subscription required May 25, 2023
....................... Subscription required ....................... Subscription required Subscription required May 25, 2023
....................... Subscription required ....................... Subscription required Subscription required May 25, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required May 25, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 20, 2023
....................... Subscription required ....................... Subscription required Subscription required May 25, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Press Release 2023
Annual Information Form 2022
Quarterly Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Annual Report 2018
Technical Report 2018
Annual Information Form 2017
Annual Report 2017
Annual Information Form 2016
Annual Report 2016
Technical Report 2016
Press Release 2006
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